Cierva's C30 series and Pitcairn's PA-22 and Luscombe-built aluminum body PA-36, and the KD-1 series constructed by Kellett Autogiro Company of Philadelphia were capable of jump take-offs and direct-control without wings.
KD-1 Year: 1935. Seats: 2. Engine: Jacobs L4MA7, 225 hp. Gross wt: 2050 lbs. Empty wt: 1345 lbs. Rotor dia: 40 ft. No of blades: 3.